Door lock



Dec. 30, 1941.

L. HlRsH nooR Locx Filed Feb. 10.11940 2 sheets-sheet 1 mm I l.. HlRsH DOOR LOCK Dec. 30, 1941.

Filed Feb. 10,1940 2 sheets-sheet 2 LEO HIE BY INVENTOR.

Patented Dec. 30, 1 941` UNITED STATES` PATENT OFFICE t D005@ LQQK Leo yHirsh, LosAngeles, Galif. Application `Ifebruary 1o, 11940, seriai No. 318,239

This invention relates to locks and more es-Y pecially to door locks of the rotary knob type having different inner andouter locking Icharacteristics.

The `general object ofthe invention is to pro-.7

vide an improved locking mechanism of the rotary knob wherein one of` the knobs is provided with `a key cylinder and the other knob is provided with means for locking the mechanism and also releasing the same so as to be actuated by" the knob having the key cylinder. s A particular object of the invention is to provide a lock mechanism according to the previous object wherein the key cylindered knob may be released by merely turning the other knob.

Other and more specilic objects and advany Of Fig. 2; 11:'

Fig. 6 is a sectional View7 taken along the line 6 6 of Fig. 4; s

Fig. 7 is a sectional View taken along the line 1--1 of Fig. 4; Y

Fig. 8 is a sectionalview taken along line `3 3 of Fig. 1;

Fig. 9 is a perspective view of` the reciprocatin g spindle and sleeve;

Fig. l is a perspective view of the plunger button;

Fig'. 11 is a sectional View taken along the line Il-ll ofFig.2; s

Fig. 12 is a perspective View of one of the lock housing members.

Fig. 13 is a fragmentary side view of the bolt mechanism; and

Fig. 14 is a top view of the same.

Referring more particularly to the drawings, I show a door jamb l having a lock aperture I6 and an aperture l1 for a bolt housing I8.

The bolt I9 is spring biased in the usual manner and is adapted to be retracted by the rotation of a roll-back which has a square aperture 2| in which is slidably positioned a rectangulartube or sleeve 22 within which iS sld-` -55 ment with a flattened end portion 56 of spindle` `5 Claims. Cl. 7B-146) y ably positioned a rectangular section spindle `23.

Spindle 23 is slidable within tube 22 but is rotatable therewith. A lock retaining shell 24 has a l `circular flange 25 by which it is held against one face of door jamb l5 and it is secured to the other `face by a plate 26 secured as by screws to inturned flanges 21. Shell 24 is prevented from rotation by cut-out portions 28 which extend above and below housing I8.

The inner knob indicated at 29 has a hub 30 provided with a squared aperture through which extends tube 22. An escutcheon section 3l for knob 26 is secured to plate A26 by internally formed beads and a flat pin 32 which extends par-` tially through an aperture in escutcheon 3| and .isheldbyaloop 32a pressed out on plate Z6. Knob 29 is held in place von tube 22 by means of a lock piece 3,3 which is reciprocably mounted in hub and `is provided with a square aperture 34 through which tube 22 and spindle 23 extend,

piece 33 having an edge portion `35 adaptedto` engage a slot 36 in the lower Aside portion of tube 22 in which position the piece `33 is held by means of a spring `3". An `aperture 38 in kn`ob'29 prol vides a bearing `for an extension 39 of piece 33 by which it may be released from engagement with slot 36 by pressing inwardly thereon. Knob `29 has a central :aperture Y4l) through whichv eX- tends the button end of apl'unger M which is 1 hollow so las to receive the `ends of tube 22 and spindle `23.

Outer knob 4 2 is provided with an escutcheon ,43 which is secured'to flange 25 by a frictional forced t and. is provided with a hub 44 retained in position by a flanged member 45 on the inner side of iange 25. Hub 44 has a pair of diametrically opposite slots 46 in each of which is positioned an L-shaped piece 4l each held in position by a spring 48 which seats against the shoulder of a bushing 49 which is secured to hub 44 in `any suitable manner such as by a pin 50. Bushing 49 has a square aperture 5I slightly i larger than the `dimensions of spindle 23 so as to be rotatable with a portion 23a of spindle 23 when in engagement therewith, and a larger aperture 52 in which spindle 23a" may` rotate without turning with the bushing. Spindle 23 is provided with a circular portion 23h which permits spindle 23 to rotate without engaging bushing 49 asit extends in square aperture 5i at such times.

A pin lock barrel 53 is suitably secured to hub` scribed.

Tube 22 has a flanged end portion 6I andis held against removal from the assembly of hub 44 by a flanged sleeve 62 secured in the assembly,w

by the flange thereof which is positioned between a shouldered recess in hub 44 andthe anged ends of pieces 41. A locking plate 63 isnmounted construction when the door is closed in any manner, the retraction of bolt I9 by passing over the strike plate 80 will' cause ear 18 to engage abutment 19 and turn roll-back 20 which action will release notch 60 from aperture 12 as described above. Thus the door can be locked only after it has been closed and plunger 4I and spindle 23 depressed thereafter.v

Having described my claim is:

1. In a door lock as described having a fixed housing, a rotatable bolt retractor therein, an

invention, what I inner knob having a plunger 'element and an outer knob having a key cylinder, the combination of a tube engaging said retractor and rotatable by said inner knob, a spindle extending through said tube and rotatable therewith, a hub on a flanged collar (i4 which is secured byapin 65 extending through spindle 23,.the latter having `an aperture 66 therefor. Plate 63 i`s retained i on collar 64 between the flanged portion therelof andpin 65. Tube 22 is provided with :a pair of oppositely disposed slots 61 through which pin E5 extends and by which the limit of reciprocation of spindle 23 is effected.

Locking plate 63 has a pair of diametrically disposed extensions 68 which extend into cutout portions 28 of shell 24 in such manner that plate B3 is kept from rotation but is slidable in the shell. Plate 63 is also provided with a pair of diametrically disposed shouldered cut-outs 69 for engagement with pieces 41 by which the vhub assembly 44 is locked when plate 63 is in engagement therewith and unlocked when out .of engagement by retraction of the spindle 23.

Hub 44 and bushing 49 are provided with guides for a slidable lockingplate 10, :and a spring 1I normally keeps plate 10 in its uppermost position. Plate 1I) is provided -with a square aperture 12 through which extends portion 23a of spindle 23. Aperture 12 is for the purpose of engaging notch 60 so as to retain spindle 23 in the inner or left hand position. Cam surface 59 is adapted to pass over the lower edge of aperture 12 when plunger 4I is pressed inwardly, which carries spindle 23 inwardly forcing plate 1I] inwardly and locking by engagement with notch 6l).` This inward movement of spindle 23 causes engagement of locking plate 63 with pieces 41 which locks hub assembly 44 against rotation including outer knob 42.

The locked assembly may be released by the turning of spindle 23 in either of two manners. When the inner knob is turned, tube 212 and spindle 23 will be rotated, retracting bolt I9; and when spindle 23'has been turned a quarter turn, notch 64" will be freed from aperture 12" and spring 51 will push spindle 23 outwardly carrying with it locking plate 63 which will be freed from engagement with pieces 41. The same action will occur upon the rotation of key cylinder 54 by the key which rotation will turn spindle 23 by the engagement of spindle section 56 in piston barrel 54. Upon the vretraction as just described of spindle 23, square section 23a will engage square aperture 5| and the bolt retracting vmechanism y,can be actuated by the outer knob through hub 44 and bushing 49.

Bolt I9 has a tubular shank 13'rom which extend a pair of flat extensions 14, eachhaving an aperture and an abutment 16. Cylinder 2d has a sector 11 which engages abutments 18 for retracting bolt I9 when roll-back 20 is turned andan ear 18 extends into one aperture-15 so as to engage an abutment 19 on sector 11. By this secured to said outer knob and having members projecting into said housing, and a locking plate `secured to said spindle adapted to engage said projections when said spindle is actuated.

2. In a door lock as described having a fixed housing,A a rotatable bolt retractor therein, an inner knob having a plunger element and an outer knob having a key cylinder, the combination of a tube engaging said retractor and rotatable by said inner knob, a spindle slidably mounted in said tube and rotatable therewith, a hub secured to said outer knob and having members projecting into said housing, and a locking plate secured to said spindle adapted to engage said projections to lock said lock when said spindle is actuated by'said plunger element and adapted to be disengaged from said projections to unlock said lock when said spindle is rotated by said key cylinder in the outer knob. 3. In a door lock as described havng a fixed housing, a rotatable bolt retractor therein, an inner knob having a plunger element and an outer knob having a key cylinder, the combination of a tube engaging said retractor, a spindle slidably mounted in said tube and rotatable therewith, a plunger in said inner knob whereby to depress said spindle toward said outer knob, a spring actuated locking plate adapted to hold said spindle in depressed position, a hub secured to said outer knob, a locking plate secured to said spindle adapted to engage a portion of said hub to lock the same against rotation when said spindle is depressed, said spindle when rotated adapted to be freed from said locking plate, and a spring engaging said spindle adapted to retract the spindle when so freed whereby to release said locking plate from said hub.

4. In a door lock as described having a` xed housing, a rotatable bolt retractor therein, an inner knob having a plunger element and an outer` knob having a key cylinder, the combination of a tube engaging said retractor, a spindle slidably mounted in said tube and rotatable therewith, a plunger in said inner knob whereby to depress said spindle toward said outer knob, a spring actuated locking plate adapted to hold said spindle in depressed position, a hub secured to said outer knob, a locking plate secured to said spindle adapted to engage a portion of said hub to lock the same against rotation rwhen said spindle is depressed, said spindle when rotated adapted to be freed from said locking plate, and a spring engaging said spindle adapted to retract the spindle when so freedwhereby lto release said locking plate from said hub, said spindle adapted to engage said hub so asv to be rotatable thereby when said spindle is in retracted position and to be disengaged from said hub when in depressed position.

5. In a door lock as described `having `a fixed housing, and a rotatable bolt retractor therein, the combination of a spindle element, a hubon said spindle element, a knob secured to said hub, and means to secure said hub on said spindle, said means comprising a spring actuated plate having a spindle aperture and a notch engaging shoulder, said spindle having a notch adapted for engagement with said shoulder, said plate adapted to be displaced transversely on said spindle whereby to release said hub therefrom.

LEO HIRSH. 

